Lih-Shyng Tzeng - 2006-06-29 15:55 Added this to 3.6 list.

Martin Steinmann - 2006-07-01 18:40 Another VoIP switch uses the following dial plan fields: Prefix (stripped) Head Tail Minimum Tail (number of digits) Action Add Prefix Prefix - The characters in the Prefix+Head+Tail field are compared against the dialled number. The characters in the Prefix field (e.g. 0 for an outside line or * for some special service) must be an exact match to the beginning of the dialled number and are stripped off before an Action is taken. Head - The Prefix+Head field must also be an exact match to the beginning of the dialled number. Tail - The Tail field specifies the characters that are allowed in the remainder of the dialled number (after an exact match of Prefix+Head). Options are     0-9,+-#*     0-9     A-Z, a-z     A-Z, a-z, 0-9 Minimum Tail - If, after a match in the three previous fields, the length of the tail part is less than specified in this field, the dialled number is regarded as incomplete. The dial plan then allows either to "Forward" or "Deny" calls that match the criteria. I like the concept of a Prefix and Head where only the prefix is stripped. Also, it is possible to specify the matching characters. they do not allow suffic matching. This could work nicely for our custom dialing rule.